1. Grübler A, Ishitani H, Johansson T, Marland G, Moreira JR, Rogner H-H B (1996) Energy Primer. IPCC—Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, UK
2. Bringezu S, Schütz H, Pengue W, O’Brien M, Garcia F, Sims R, Howarth R, Kauppi L, Swilling M, Herrick J (2014) UNEP. Assessing global land use: balancing consumption with sustainable supply. A report of the working group on land and soils of the international resource panel. United Nations Environment Programme, Nairobi
3. AGECC (2010) Energy for a sustainable future. Summary report and recommendations‚. The secretary-general’s Advisory group on Energy and climate Change, New York
4. REN21 (2013) Renewables 2013 Global Status Report (Paris: REN21 Secretariat)
5. IEA (2013) World Energy Outlook 2013. Paris